WH--were you asleep the last 8 years? I have friends who support Obama and those who don't. And, oddly enough, may of the supporters comment on the fact that he is bi-racial. That has come up ONCE in discussions by people that don't support him....and that was someone in their 80s, so I just disregarded it. Not a big deal.
OTOH, my boss can't decide whether to call him Obama or Osama so he uses them both...and I correct him gently each time (I have to be careful...he's 69, stroke survivor & early stages of Alzheimer's, so I have to be judicious when correcting him...even if I am here temp)